Income Taxes - Components of Income Tax Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 25, 2015	Jan. 26, 2014	Jan. 27, 2013
Current tax provision
Federal	$ 749us-gaap_CurrentFederalTaxExpenseBenefit	$ 3,769us-gaap_CurrentFederalTaxExpenseBenefit	$ 7,100us-gaap_CurrentFederalTaxExpenseBenefit
State	0	554	784
Foreign	7,810us-gaap_CurrentForeignTaxExpenseBenefit	14,962us-gaap_CurrentForeignTaxExpenseBenefit	5,745us-gaap_CurrentForeignTaxExpenseBenefit
Subtotal	8,559us-gaap_CurrentIncomeTaxExpenseBenefit	19,285us-gaap_CurrentIncomeTaxExpenseBenefit	13,629us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax provision (benefit)
Federal	508	23,938	(15,812)
State	(100)	(1,293)	(148)
Foreign	(419)	(5,945)	(39,359)
Subtotal	(11)us-gaap_DeferredIncomeTaxExpenseBenefit	16,700us-gaap_DeferredIncomeTaxExpenseBenefit	(55,319)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision (benefit) for taxes	$ 8,548us-gaap_IncomeTaxExpenseBenefit	$ 35,985us-gaap_IncomeTaxExpenseBenefit	$ (41,690)us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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